<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    {% with zs=persons.0%}
        <p>{{ zs }}</p>
        <p>{{ zs }}</p>
    {% endwith %}
    <p>{{ zs }}</p>

    {% with persons.0 as zs %}
        <p>{{ zs }}</p>
    {% endwith %}
</body>
</html>